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IV99693: JAVA JIT COMPILER CRASH IN OSR PROCESSING DURING INLINING

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APAR status

  • Closed as program error.

Error description

  • Error Message: Segmentation error.
    .
    Stack Trace:
    OMR::ResolvedMethodSymbol::genAndAttachOSRCodeBlocks(...)
    OMR::ResolvedMethodSymbol::genIL(...)
    ...
    TR_InlinerBase::tryToGenerateILForMethod(...)
    ...
    .
    

Local fix

  • The problem can be avoided by passing -Xjit:disableOSR. This may
    cause performance degradation and can be selectively applied to
    problem methods if they can be identified.
    

Problem summary

  • The compiler's internal data structures which facilitate OSR
    transitions from JIT compiled code to the VM interpreter can,
    under rare circumstances, conflate transition information when
    two different copies of a method are inlined into a single unit
    of compilation. When this conflation happens, the compiler may
    attempt to duplicate or may fail to insert required OSR
    transition infrastructure. This error will then lead to a crash
    in the JIT compiler, most commonly with the backtrace shown.
    This failure will not result in miscompilation or runtime
    failures.
    

Problem conclusion

  • The JIT compiler's internal data structures have been modified
    to ensure that callsite specific transition information is
    tracked on a per callsite basis - this prevents the conflation
    and ensures the appropriate transition infrastructure is always
    added.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR4 FP11  (8.0.4.11)
       7 R1 SR4 FP15  (7.1.4.15)
    .
    Contact your IBM Product's Service Team for these Service
    Refreshes and Fix Packs.
    For those running stand-alone, information about the available
    Service Refreshes and Fix Packs can be found at:
               https://www.ibm.com/developerworks/java/jdk/
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV99693

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-09-07

  • Closed date

    2017-09-07

  • Last modified date

    2017-09-07

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R130 PSY

       UP

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Document Information

Modified date:
07 September 2017